andrewphaley

Recent Posts

I had an interesting question from one of our developers here at Red Hat:

“When I was investigating a performance issue in our project after switched to oracle’s jdk7u40, I found a performance regression in classsun.net.www.protocl.http.HttpURLConnection.getOutputStream(). This method takes more cpu time than with jdk7u25.”

And it does, much more time. In fact, when fixedLengthStreamingMode is enabled HttpURLConnection.getOutputStream() takes ten times as long: about 1.2 milliseconds versus 47 microseconds.

We at the AArch64 Port Project are pleased to announce the first release of OpenJDK on the Linux/AArch64 platform. It is the first implementation of the Java platform to be made available for this processor architecture.

For those who haven’t heard: AArch64 is the latest architecture from ARM. It is an entirely new instruction set, not compatible with the earlier generation of 32-bit ARM processors, so we need a new OpenJDK port for it.